US2773531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Envelope-like containers
Assignee: Individual
•
Filing: 1955-02-28
•
Granted: 1956-12-11
•
Expires: 1975-02-28
Abstract
No abstract record available.
Inventors
- 👤 Johnson Clarence La Verne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:27
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/02; A61F2007/0001; A61F2007/0225; A61F2007/0228; A61F2007/023; A61F2007/0244; A61F2007/0258
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1819807A
Cited
US1964962A
Cited
US2288745A
Cited
US2590212A
Cited
US2669272A
Cited
US2710639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |